In a final showdown with George Zax, Billy and Patty seek justice for the victims of the opioid epidemic, no holds barred.

Billy scrambles to get his wrongful death lawsuit into court by any means necessary.

The judge gives Billy only a day to make a compelling offer of proof before he dismisses the lawsuit.

With danger mounting around every corner, Billy has to decide whether to head directly to trial or take his chances with a continuance.

The trial concludes as former partners and old friends have their final showdown in court.

Billy has to go to great lengths to secure his physical evidence's safety and preserve his witnesses' credibility.

When Patty calls a surprise witness to the stand, the defense does everything they can to undermine the witness’s credibility.

As both sides begin their depositions, more secrets start to come to the surface, threatening to destroy everyone involved.

A burned-out attorney gets a second chance for redemption when he agrees to pursue a wrongful death lawsuit against the biggest client of his former law firm.

The beginning of discovery unearths a startling new piece of evidence that threatens to unravel Billy's entire theory of the case.

Billy puts Wade Blackwood on the stand and under oath, forcing him to admit every detail of his scheme to steal the state’s water.

Billy goes to extremes to keep the case alive, and Sam questions whether bringing him on board was a good idea after all.

As Billy faces repercussions from his conduct, he is forced into a truce with an old adversary.

Billy McBride is reluctantly pulled back into criminal defense when his friend's 16- year-old son is arrested for a double murder.

As Billy and Patty close in on the Blackwoods, Wade tries to cover up their crimes while Diana makes one final, desperate play, regardless who gets in her way.

Billy and Patty take measures to protect a witness, while the partners at Margolis & True scramble to strengthen their case.

Billy tries a risky strategy to suppress the prosecution's two key pieces of evidence, hoping he can clear Julio's name before trial even begins.

Billy finally gets a witness who can exonerate Julio, but he won't talk unless Billy can convince the prosecutor to give him a deal.

Flashing back to before the events of the season, Billy has a drunken weekend at the Rising Sun Hotel and Casino, crossing paths with the Blackwoods and their scheme to steal water.

Billy and Patty grill the Blackwoods in their depositions, shining a light on their complicated relationship and how they obtained ownership of the county’s water supply.

As Billy and Sam grow closer, he discovers that the opioid industry is keeping bigger secrets than he ever imagined.

After a brutal loss, Billy decides to formally take on Julio Suarez's defense but, before he can go back to court, he must get his team back together.

When Billy learns the name of the real shooter, he has to turn to the FBI to help him bring his elusive suspect in for questioning.

Billy’s investigation into the Central Valley’s water problem threatens the launch of Diana Blackwood’s almond-based lifestyle brand.

The unexpected death of an old friend takes Billy McBride to California’s Central Valley, where a record drought has made water more valuable than human life.